Contributors: UAM. Departamento de Física Teórica de la Materia Condensada; 'Departamento de Física de la Materia Condensada (C-III), Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid E-28049, Spain',' Kavli Institute of Nanoscience, Delft University of Technology, Delft 2600, GA, Netherlands',' Departamento de Física Teórica de la Materia Condensada (C-III), Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid E-28049, Spain',' Instituto Madrileño de Estudios Avanzados en Nanociencia IMDEA- Nanociencia, Madrid E-28049, Spain'; 'This work was supported by MICINN (Spain) through the programs MAT2008-01735, MAT2011-25046 and CONSOLIDER-INGENIO-2010 ‘Nanociencia Molecular’ CSD-2007-00010',' Comunidad de Madrid through program Nanobiomagnet S2009/MAT-1726',' and European Union through programs BIMORE (MRTN-CT-2006-035859) and ELFOS (FP7).'
Abstract: We fabricate and characterize carbon-fiber tips for their use in combined scanning tunneling and force microscopy based on piezoelectric quartz tuning fork force sensors. An electrochemical fabrication procedure to etch the tips is used to yield reproducible sub-100-nm apex. We also study electron transport through single-molecule junctions formed by a single octanethiol molecule bonded by the thiol anchoring group to a gold electrode and linked to a carbon tip by the methyl group. We observe the presence of conductance plateaus during the stretching of the molecular bridge, which is the signature of the formation of a molecular junction.
Conference Proceeding (Trends in NanoTechnology 2011, Tenerife SPAIN); Nanoscale Research Letters, (2012) 7:254
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